Navigating Romania, from Transylvania's medieval towns to Bucharest's boulevards, needs reliable data. I'm Maria Castro — you can read more about my work about Maria Castro — and after testing networks across the country, I've learned the real choice here is between an instant travel eSIM and one of Europe's cheapest local prepaid plans. This guide compares 2026 pricing, coverage on mountain roads, and the Schengen-era cross-border picture. For the wider market, see our best eSIM 2026 comparison. Best eSIM for Romania 2026: What Actually Matters For Romania, the trade-off is sharper than in most EU countries: Instant convenience: Travel eSIMs from Airalo or Saily install in minutes. You land at Otopeni Airport (OTP) and are online before the carousel starts. Ultra-low cost: Digi Mobil's local prepaid is the cheapest mobile data in the European Union — roughly €5/month for unlimited 5G. The catch is a physical store visit with your passport. Your trip length and how much data you actually use decide which side wins. Quick Answer: Which eSIM Should You Pick? Trip Type — Recommendation — Why Short city break (3-5 days) — Airalo Romania eSIM — Instant setup, uses top-rated Orange Romania, cheap for 1-3 GB. Family vacation (1-2 weeks) — Airalo 5 GB / 30-day plan — Enough for navigation, social, and translation. Hotspot allowed. Alpine road trip (Transfăgărășan) — Airalo Romania eSIM — Orange holds best in the mountains; preload offline maps anyway. Danube Delta eco-tour — Airalo Romania eSIM — Orange runs 5G Standalone in 23 Delta localities under an EU project. Multi-country Balkans tour — Airalo Eurolink regional — Covers Romania, Hungary, and Bulgaria. Won't work in Serbia or Moldova. Heavy data user (≥14 days) — Digi Național 5 prepaid — ~€5 for unlimited 5G (200 GB soft cap) if you can spare a store visit. Romania eSIM Plans Compared (2026 Prices) Airalo is our top travel-eSIM pick because it routes exclusively on Orange Romania, the country's best-rated network, and the price ladder is clean. Provider — Data — Validity — Price (USD) — 5G — Hotspot Airalo Romania — 1 GB — 7 days — $4.50 — Yes — Yes Saily Romania — 1 GB — 7 days — $3.99 — Yes — Yes Airalo Romania — 3 GB — 30 days — $8.00 — Yes — Yes Roafly Romania — 5 GB — 30 days — $9.90 — Yes — Yes Saily Romania — 5 GB — 30 days — $10.99 — Yes — Yes Airalo Romania — 5 GB — 30 days — $11.00 — Yes — Yes Nomad Romania — 5 GB — 30 days — $12.50 — Yes — Yes Holafly Unlimited — Unlimited — 7 days — ~$27.30 — Yes — No For most one-to-three week trips, the Airalo Romania 5 GB / 30-day plan at $11.00 hits the right balance. Heavier users should jump to the 10 GB tier at $18.00. See our full Airalo review for the activation flow. > 🌍 Local insight: Holafly's "unlimited" Romania plan throttles after about 1.5 GB of high-speed data per day and blocks tethering. Always-On gives you 1 GB of slow backup. For most travelers a fixed-data Airalo plan is more honest and far cheaper. How Do Travel eSIMs Compare to a Digi Mobil Prepaid SIM? This is the central Romania question. The pricing gap is unusual for an EU country. Pick a travel eSIM if you: Land and want data working immediately. Are staying three weeks or less. Will use under 20 GB. Don't want a store queue or passport registration. Pick a Digi Mobil prepaid SIM if you: Are staying longer than three weeks. Stream video or upload heavy files daily. Don't mind walking into a Digi store with your passport. > ⚠️ Heads up: Digi technically supports prepaid eSIM, but online activation requires a Romanian CNP (Personal Numeric Code), ID upload, and county selection — built for residents. Tourists almost always end up with the physical SIM. The cost gap is huge: Digi delivers data at roughly $0.03 per GB versus $1.80 per GB on Airalo's 10 GB plan. You're paying for convenience. Romania's Mobile Networks in 2026 Romania has three real MNOs in 2026. Telekom Romania Mobile is being absorbed and should not be treated as a standalone carrier. Network — Revenue share — 5G deployment — Role for eSIMs Orange Romania — ~35-36% — Market leader; widest 5G, including Danube Delta. — Primary partner. Airalo, Saily, Nomad all use Orange. Digi Mobil (RCS-RDS) — ~27-32% — Strong urban 5G on fiber backhaul; rural footprint growing. — Price disruptor. Rarely the primary host for travel eSIMs. Vodafone Romania — ~24-28% — Highest measured 5G download speeds; integrating Telekom Romania mobile assets (full integration by late 2026). — Secondary partner for Saily and Nomad. Romania's 5G followed the 2022-2023 spectrum auctions on 700 MHz (n28) and 3.5 GHz (n78). ANCOM counted 2.9 million 5G connections in H1 2024 — roughly 13% of all mobile lines. > 💡 Tip: Digi Mobil Romania is a separate operation from DIGI Hungary, which folded into One Hungary. Don't conflate the two — the Romanian Digi continues unchanged and is the unlimited-data anomaly. Does Your eSIM Work on the Transfăgărășan and in the Danube Delta? Yes, with caveats. On the Transfăgărășan and Transalpina scenic highways, signal is solid at lower elevations. Above 2,000 m, near Bâlea Lake and on exposed ridgelines, expect blackouts on every carrier. Both roads close from November through June. > 💡 Tip: Download offline maps in Google Maps or Waze before you climb. Treat your eSIM as a tool for checking the next hotel, not for live navigation above the treeline. In the Danube Delta, coverage is better than you'd expect. Orange Romania runs a 5G Standalone deployment in 23 Delta localities under the EU 5G-CDD project. Choosing an Orange-hosted eSIM like Airalo gives you the best shot at service in this UNESCO site, though deep channels around Letea Forest and the far north stay dark. Cross-Border eSIM Behavior: Hungary, Bulgaria, Moldova, Ukraine, Serbia Romania's land borders opened to Schengen on January 1, 2025 (air and sea were already open from March 2024). Bucharest-Sofia and Budapest-Bucharest train and coach runs now cross without passport stops. Hungary and Bulgaria (EU): A regional plan like Airalo Eurolink hands off seamlessly. See our Hungary eSIM guide for the Cluj-Oradea corridor and our Europe eSIM guide for wider EU options. Moldova, Ukraine, and Serbia (non-EU): Your Romania or EU plan stops working at the border. Buy a country-specific eSIM ahead of time. Biometric EES checks are now active at the Romania-Moldova posts. Bucharest Metro and Airport Connectivity Henri Coandă International (OTP) has strong 4G and 5G across all terminals. The Bucharest Metro is one of the best-covered underground networks in Europe. A Distributed Antenna System runs across lines M1 through M5, and Orange Romania's 5G+ in the tunnels reaches near-1 Gbps speeds while trains are moving. You can hold a video call between Universitate and Piața Romană without a drop. UK and US Carrier Roaming in Romania Check your home plan before paying for an eSIM. US carriers (AT&T, Verizon, T-Mobile): International day passes run about $10 per day. A 10-day trip costs $100 — nine times the price of an Airalo 5 GB plan. UK carriers: O2 still includes Romania in free EU roaming with a 25 GB monthly cap. EE charges £2.47/day, Vodafone UK £2.57/day, Three £2.75/day. How to Install Your Romania eSIM Setup takes about five minutes. 1. Check compatibility. Confirm your phone is unlocked and eSIM-capable. Most models from 2019 onward qualify. 2. Buy your plan. Pick a provider and tier; you'll get a QR code by email. 3. Install the profile. Go to Settings → Cellular → Add eSIM and scan the code. Do this on home Wi-Fi. 4. Activate on arrival. Toggle the new line on, enable Data Roaming for it, and wait a minute for the Orange handshake. Romania eSIM FAQ Can I get a Romanian phone number with an eSIM? Most travel eSIMs, Airalo and Saily included, are data-only and ship without a +40 number. For local voice you'd need a physical Digi or Vodafone SIM. Is 5G available on eSIMs in Romania? Yes. Airalo runs on Orange Romania's 5G in all major cities and on the main corridors at no extra cost. Can I use my eSIM for tethering? Yes on Airalo, Saily, and Nomad — they allow hotspot with no published cap. Holafly's unlimited plan is the exception and restricts tethering. What happens if I run out of data? Top up in the provider app. You'll get a notification when you're running low, and a new package activates without reinstalling the profile. Do I need to show my passport to buy a travel eSIM? No. International providers like Airalo and Saily skip ID verification. Buying a physical SIM in Romania, by contrast, requires passport registration by law. Should I buy an eSIM at Bucharest Airport (OTP)? The Vodafone and Orange kiosks at OTP sell tourist packs at marked-up prices. Installing an Airalo plan before you fly is faster and usually cheaper. For a one-to-three week Romania trip, a travel eSIM is hard to beat on convenience. The Airalo Romania 5 GB plan is our best all-around pick for the price, the Orange network, and a clean install. Related Guides The Best eSIMs for Europe in 2026 A Tourist's Guide to eSIMs for Hungary Airalo Review: Is It the Best eSIM Provider? The Ultimate Guide to International eSIMs for 2026 Last updated 2026-05-21.